3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isCorrect($string) { if (strlen($string) % 2 === 0) { for( $i = 0; $i < strlen($string); $i++) { var_dump($string[0]); } return true; } return false; } $string = '({{}})'; isCorrect($string); //var_dump(isCorrect($string)); //var_dump(strlen($string) % 2); //assert(isCorrect('') === true); //assert(isCorrect('()') === true); //assert(isCorrect('{()}') === true); //assert(isCorrect('{()}{}') === true); //assert(isCorrect('(())') === true); //assert(isCorrect('{({({({()})})})}') === true); //assert(isCorrect('{(})') === false);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0090.00618.18
8.3.50.0100.01021.19
8.3.40.0070.01118.65
8.3.30.0070.00719.14
8.3.20.0020.00520.35
8.3.10.0040.00423.59
8.3.00.0030.00619.23
8.2.180.0110.00418.31
8.2.170.0110.00322.96
8.2.160.0070.00720.52
8.2.150.0000.00924.18
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0080.00022.09
8.2.110.0000.00921.97
8.2.100.0070.00417.91
8.2.90.0050.00317.91
8.2.80.0030.00617.97
8.2.70.0000.00817.63
8.2.60.0030.00517.93
8.2.50.0030.00618.07
8.2.40.0030.00620.07
8.2.30.0040.00418.07
8.2.20.0030.00617.76
8.2.10.0040.00418.06
8.2.00.0000.00717.75
8.1.280.0110.00425.92
8.1.270.0050.00323.80
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00722.68
8.1.230.0040.00822.63
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0070.00317.23
8.1.190.0060.00317.23
8.1.180.0040.00418.10
8.1.170.0000.00918.48
8.1.160.0040.00421.85
8.1.150.0040.00418.88
8.1.140.0040.00417.35
8.1.130.0000.00717.82
8.1.120.0000.00717.40
8.1.110.0050.00317.40
8.1.100.0020.00517.41
8.1.90.0000.00817.47
8.1.80.0000.00717.38
8.1.70.0030.00317.38
8.1.60.0060.00317.57
8.1.50.0090.00017.54
8.1.40.0080.00017.49
8.1.30.0030.00617.64
8.1.20.0040.00417.65
8.1.10.0040.00417.58
8.1.00.0040.00417.51
8.0.300.0040.00419.98
8.0.290.0070.00016.63
8.0.280.0040.00418.50
8.0.270.0000.00717.27
8.0.260.0030.00317.17
8.0.250.0070.00016.97
8.0.240.0000.00717.00
8.0.230.0030.00716.84
8.0.220.0030.00316.95
8.0.210.0030.00316.91
8.0.200.0030.00317.00
8.0.190.0050.00316.95
8.0.180.0000.00716.88
8.0.170.0040.00416.91
8.0.160.0070.00016.92
8.0.150.0040.00416.82
8.0.140.0080.00016.87
8.0.130.0030.00313.36
8.0.120.0040.00416.74
8.0.110.0030.00516.91
8.0.100.0000.00816.76
8.0.90.0040.00416.85
8.0.80.0090.01216.89
8.0.70.0000.00916.95
8.0.60.0070.00016.75
8.0.50.0020.00516.79
8.0.30.0090.01117.04
8.0.20.0090.01117.40
8.0.10.0080.00017.01
8.0.00.0090.00916.71
7.4.330.0050.00015.02
7.4.320.0000.00616.49
7.4.300.0000.00716.61
7.4.290.0030.00316.50
7.4.280.0030.00616.45
7.4.270.0000.00616.51
7.4.260.0070.00016.51
7.4.250.0070.00016.37
7.4.240.0020.00516.65
7.4.230.0040.00416.41
7.4.220.0070.01016.61
7.4.210.0090.00916.55
7.4.200.0000.00716.45
7.4.150.0160.00317.40
7.4.140.0090.01017.86
7.4.130.0100.00716.50
7.4.120.0080.01016.55
7.4.110.0140.00316.61
7.4.100.0070.01016.47
7.4.90.0080.00816.58
7.4.80.0100.00719.39
7.4.70.0100.00716.48
7.4.60.0140.00316.50
7.4.50.0020.00216.53
7.4.40.0160.00616.43
7.4.30.0090.00916.52
7.4.00.0110.00415.21
7.3.330.0050.00013.20
7.3.320.0050.00013.31
7.3.310.0030.00316.38
7.3.300.0040.00416.36
7.3.290.0060.00916.34
7.3.280.0080.01016.34
7.3.270.0070.01117.40
7.3.260.0090.00916.58
7.3.250.0150.00316.52
7.3.240.0080.00916.50
7.3.230.0060.01016.39
7.3.210.0000.01616.35
7.3.200.0030.01419.39
7.3.190.0090.00916.59
7.3.180.0110.00616.38
7.3.170.0060.01316.34
7.3.160.0130.00316.22
7.2.330.0100.00616.58
7.2.320.0130.00316.85
7.2.310.0090.00616.63
7.2.300.0030.01316.75
7.2.290.0170.00716.55
7.2.00.0060.01519.50
7.1.100.0090.00318.04
7.1.70.0020.00517.06
7.1.60.0130.00919.11
7.1.50.0060.01816.82
7.1.00.0000.07722.35
7.0.200.0090.00016.56
7.0.140.0000.07021.95
7.0.60.0030.08020.04
7.0.50.0030.08317.88
7.0.40.0100.07320.27
7.0.30.0300.03320.23
7.0.20.0200.07020.10
7.0.10.0170.08020.20
7.0.00.0070.08720.07
5.6.280.0030.07321.03
5.6.210.0030.06320.76
5.6.200.0070.04718.18
5.6.190.0070.07320.61
5.6.180.0270.06320.39
5.6.170.0170.04320.47
5.6.160.0070.04320.46
5.6.150.0200.07018.28
5.6.140.0100.08018.21
5.6.130.0030.08318.18
5.6.120.0000.05020.94
5.6.110.0070.07721.00
5.6.100.0000.04320.99
5.6.90.0070.08721.00
5.6.80.0130.07320.37
5.6.70.4000.03720.28
5.5.350.0100.08020.35
5.5.340.0100.07317.95
5.5.330.0030.04320.49
5.5.320.0330.07320.24
5.5.310.0330.06320.27
5.5.300.0070.06717.94
5.5.290.0130.07017.95
5.5.280.0000.05320.96
5.5.270.0100.08320.77
5.5.260.0130.07720.87
5.5.250.0130.07320.69
5.5.240.0270.07020.19
5.4.450.0700.06019.59
5.4.440.0170.05319.56
5.4.430.0700.07019.60
5.4.420.0700.00019.38
5.4.410.0800.00019.27
5.4.400.0630.00019.32
5.4.390.0630.00019.23
5.4.380.0730.00019.11
5.4.370.0600.00019.25
5.4.360.0630.00019.06
5.4.350.0630.00019.16
5.4.340.0040.03712.01
5.4.320.0050.03712.51
5.4.310.0080.03512.50
5.4.300.0050.03912.50
5.4.290.0040.04112.50
5.4.280.0070.03612.40
5.4.270.0100.03212.40
5.4.260.0100.04712.40
5.4.250.0090.03512.40
5.4.240.0080.03412.39
5.4.230.0090.03512.39
5.4.220.0070.03612.39
5.4.210.0070.03712.39
5.4.200.0070.03912.39
5.4.190.0050.03712.39
5.4.180.0060.03512.38
5.4.170.0080.03512.39
5.4.160.0050.03712.39
5.4.150.0050.03612.39
5.4.140.0060.03612.07
5.4.130.0060.03612.06
5.4.120.0060.03612.01
5.4.110.0050.03612.02
5.4.100.0040.03812.01
5.4.90.0110.03912.01
5.4.80.0080.03512.02
5.4.70.0070.03812.01
5.4.60.0080.03312.01
5.4.50.0060.03612.01
5.4.40.0040.03612.00
5.4.30.0050.03712.00
5.4.20.0040.04012.00
5.4.10.0070.03312.00
5.4.00.0070.03511.48
5.3.290.0070.03912.80
5.3.280.0050.03912.71
5.3.270.0060.03912.72
5.3.260.0080.04312.72
5.3.250.0080.03512.72
5.3.240.0060.04612.72
5.3.230.0080.04012.70
5.3.220.0040.04212.68
5.3.210.0080.03912.68
5.3.200.0090.03412.68
5.3.190.0060.04112.68
5.3.180.0110.03112.68
5.3.170.0100.03212.67
5.3.160.0080.03412.67
5.3.150.0080.03612.67
5.3.140.0080.03512.66
5.3.130.0080.03712.66
5.3.120.0080.04512.66
5.3.110.0050.04112.66
5.3.100.0040.03912.12
5.3.90.0060.04012.10
5.3.80.0170.03312.09
5.3.70.0070.03612.09
5.3.60.0070.04212.08
5.3.50.0090.04312.02
5.3.40.0080.03412.02
5.3.30.0080.03611.98
5.3.20.0070.04811.76
5.3.10.0040.03811.73
5.3.00.0080.04311.71
5.2.170.0030.0329.21
5.2.160.0050.0349.21
5.2.150.0040.0339.21
5.2.140.0050.0369.21
5.2.130.0050.0289.17
5.2.120.0100.0349.17
5.2.110.0050.0339.18
5.2.100.0070.0279.18
5.2.90.0060.0279.18
5.2.80.0040.0319.17
5.2.70.0040.0319.17
5.2.60.0070.0289.13
5.2.50.0040.0349.10
5.2.40.0030.0329.07
5.2.30.0070.0289.04
5.2.20.0030.0309.03
5.2.10.0060.0268.94
5.2.00.0060.0328.80
5.1.60.0040.0248.09
5.1.50.0060.0298.08
5.1.40.0020.0338.06
5.1.30.0040.0328.41
5.1.20.0070.0308.43
5.1.10.0060.0268.16
5.1.00.0050.0258.16
5.0.50.0040.0246.64
5.0.40.0020.0216.50
5.0.30.0040.0366.31
5.0.20.0030.0216.28
5.0.10.0050.0196.26
5.0.00.0060.0336.25
4.4.90.0040.0164.78
4.4.80.0030.0144.75
4.4.70.0030.0264.75
4.4.60.0040.0224.75
4.4.50.0030.0164.77
4.4.40.0050.0254.71
4.4.30.0040.0154.76
4.4.20.0030.0164.84
4.4.10.0070.0134.85
4.4.00.0010.0284.76
4.3.110.0020.0194.66
4.3.100.0040.0174.66
4.3.90.0030.0164.63
4.3.80.0030.0254.58
4.3.70.0050.0124.63
4.3.60.0040.0144.62
4.3.50.0030.0154.63
4.3.40.0050.0214.53
4.3.30.0020.0173.30
4.3.20.0020.0173.28
4.3.10.0000.0243.24
4.3.00.0230.0236.64

preferences:
43.53 ms | 401 KiB | 5 Q